height, weight = eval(input("请输入身高（米)和体重（公斤）[逗号隔开]："))
bmi = weight / pow (height, 2)
print("BMI 数值为：{:.2f}".format(bmi))
who = ""
if bmi < 18.5:
    who = "偏瘦"
elif 18.5 <= bmi < 24:
    who = "正常"
elif 24 <= bmi < 28:
    who = "微胖"    
else:
    who = "肥胖"
print("BMI 指标为：国内'{0}".format(who))